/Engine/Plugins/Editor/ObjectMixer/ObjectMixer/Source/ObjectMixer/Public/Views/List/ObjectMixerEditorList.h
bool RequestRemoveObjectsFromCollection ( const [FName](API\Runtime\Core\UObject\FName) & CollectionName, const [TSet](API\Runtime\Core\Containers\TSet)< [FSoftObjectPath](API\Runtime\CoreUObject\UObject\FSoftObjectPath) > & ObjectsToRemove ) const